Global Patent Index - EP 4230687 A4

EP 4230687 A4 20240619 - POLYIMIDE-BASED RESIN FILM, SUBSTRATE FOR DISPLAY DEVICE USING SAME, AND OPTICAL DEVICE

Title (en)

POLYIMIDE-BASED RESIN FILM, SUBSTRATE FOR DISPLAY DEVICE USING SAME, AND OPTICAL DEVICE

Title (de)

POLYIMIDHARZFOLIE, SUBSTRAT FÜR EINE ANZEIGEVORRICHTUNG DAMIT UND OPTISCHE VORRICHTUNG

Title (fr)

FILM DE RÉSINE À BASE DE POLYIMIDE, SUBSTRAT POUR DISPOSITIF D'AFFICHAGE L'UTILISANT, ET DISPOSITIF OPTIQUE

Publication

EP 4230687 A4 20240619 (EN)

Application

EP 22888608 A 20220822

Priority

  • KR 20210185016 A 20211222
  • KR 20220099145 A 20220809
  • KR 2022012501 W 20220822

Abstract (en)

[origin: EP4230687A1] The present disclosure relates to a polyimide-based resin film wherein a thermal hysteresis gap at a temperature of 50°C or more and 150°C or less is 100 µm or more and 500 µm or less, and a substrate for display device, and an optical device using the same.

IPC 8 full level

C08J 5/18 (2006.01); C08G 73/10 (2006.01); C08K 5/521 (2006.01); C08L 79/08 (2006.01)

CPC (source: EP US)

C08G 73/1032 (2013.01 - US); C08G 73/1039 (2013.01 - EP US); C08G 73/1042 (2013.01 - EP US); C08G 73/1053 (2013.01 - EP US); C08G 73/1071 (2013.01 - EP US); C08J 5/18 (2013.01 - EP US); C08K 5/521 (2013.01 - US); C08L 79/08 (2013.01 - EP); C08J 2379/08 (2013.01 - EP US)

C-Set (source: EP)

C08K 5/521 + C08L 79/08

Citation (search report)

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

Designated extension state (EPC)

BA ME

Designated validation state (EPC)

KH MA MD TN

DOCDB simple family (publication)

EP 4230687 A1 20230823; EP 4230687 A4 20240619; JP 2024504900 A 20240202; TW 202325781 A 20230701; TW I838838 B 20240411; US 2024034848 A1 20240201; WO 2023120862 A1 20230629

DOCDB simple family (application)

EP 22888608 A 20220822; JP 2023530019 A 20220822; KR 2022012501 W 20220822; TW 111132797 A 20220831; US 202218256746 A 20220822